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£7 Shipping to NI, England, Wales or Scotland
Estimated Delivery: Within 5 working days
Northern Ireland / England / Wales / Scotland*
*We are currently unable to deliver to the Scottish highlands.
We currently don’t deliver to the Channel Islands, Isle of Wight, Isle of Man or to the Republic of Ireland.
Delivery costs are added at checkout.
Delivery times are estimates and may take longer during busy times, holidays or when there are adverse weather conditions or courier delays. Please ensure that you order in good time.
Give your lawn the autumn boost it deserves with iGrow Carpet Autumn Lawn Builder, specially formulated to thicken your grass and help repair summer wear and tear
iGrow Carpet Autumn Lawn Builder is a slow-release feed that continues working as days shorten, keeping your lawn green and healthy throughout Autumn. It releases nutrients slowly, providing sustained and controlled results for up to 3 months. This means your lawn gets the right amount of nourishment over time. With iGrow Carpet, lawn care is made easy, so you can enjoy a healthy lawn with less effort!
Our iGrow Carpet Autumn Lawn Builder has a partial coating that pauses nutrient release as soil cools, unlike cheaper fertiliser that unload everything at once, so your lawn avoids late-season growth spurts that can invite disease.
Nitrogen (12% N) Encourages fresh growth and helps your grass grow thicker. It’s what gives your lawn that lush, green look and helps repair damage from the summer.
Phosphate (4% P) Supports strong root growth, making your grass better at finding water and nutrients. This is key for recovery after wear and tear, and sets up a healthy foundation for the months ahead.
Potassium (12% K) Strengthens your lawn and helps it handle stress, such as colder nights and foot traffic. It also helps keep disease at bay, so your grass stays healthy.
Magnesium (4% MgO) is central to chlorophyll production, this helps your lawn achieve a darker richer shade of green. (Without any staining that comes with cheaper economy products that contain Iron)
Calcium (2% CaO) Improves root strength and overall lawn health. Calcium also helps the soil structure, making it easier for your grass to grow deep, strong roots.
Use our Measure Your Lawn Tool — to calculate how many bags you need in total.
The application rate is 25–35 grams per m².
30 grams per m² is the recommended average — it gives a great balance of colour, growth, and coverage, while allowing for a bit of wastage or overlap around edges.
We currently offer 2.5kg and 8kg bags. Use the chart below to estimate how much fertiliser you’ll need based on your lawn size and how heavily you plan to apply it.
| Lawn Size | 25g/m² | 30g/m² | 35g/m² |
|---|---|---|---|
| 50m² | 1.25kg | 1.5kg | 1.75kg |
| 100m² | 2.5kg | 3kg | 3.5kg |
| 150m² | 3.75kg | 4.5kg | 5.25kg |
| 200m² | 5kg | 6kg | 7kg |
| 250m² | 6.25kg | 7.5kg | 8.75kg |
| 300m² | 7.5kg | 9kg | 10.5kg |
| 350m² | 8.75kg | 10.5kg | 12.25kg |
| 400m² | 10kg | 12kg | 14kg |
| 450m² | 11.25kg | 13.5kg | 15.75kg |
| 500m² | 12.5kg | 15kg | 17.5kg |
iGrow Carpet Autumn Lawn Builder is a controlled slow-release fertiliser that gives your lawn a rich, vibrant green for 8–10 weeks.
If there has been a prolonged dry spell its coating can stretch that to up to 12 weeks. We recommend treating your lawn every 10 weeks to keep your lawn looking its best.
September, October or early November
This product can also be used as a Winter feed, we recommend using it at a lower rate of 20g per m2 Dec, Jan or Feb
• Use a spreader for even coverage.
• Do not apply by hand.
• We recommend watering the lawn within 48 hours of application. (The sooner it is watered in, the sooner you will see the results).
• Do not apply in a frost
• Keep pets and the kids off the lawn during application and for a few hours afterwards.
• Brush or blow excess fertiliser off driveways, patios, and paths.
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